1 /* 2 * Copyright (c) 1992, 1993 3 * The Regents of the University of California. All rights reserved. 4 * Copyright (c) 2000 5 * Poul-Henning Kamp. All rights reserved. 6 * 7 * This code is derived from software donated to Berkeley by 8 * Jan-Simon Pendry. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * @(#)kernfs.h 8.6 (Berkeley) 3/29/95 32 * From: FreeBSD: src/sys/miscfs/kernfs/kernfs.h 1.14 33 * 34 * $FreeBSD$ 35 */ 36 37 #ifdef _KERNEL 38 39 #ifdef DEVFS_INTERN 40 41 #define NDEVINO 1024 42 43 MALLOC_DECLARE(M_DEVFS); 44 45 struct devfs_dir { 46 TAILQ_HEAD(, devfs_dirent) dd_list; 47 }; 48 49 struct devfs_dirent { 50 int de_inode; 51 struct dirent *de_dirent; 52 TAILQ_ENTRY(devfs_dirent) de_list; 53 struct devfs_dir *de_dir; 54 mode_t de_mode; 55 uid_t de_uid; 56 gid_t de_gid; 57 struct timespec de_atime; 58 struct timespec de_mtime; 59 struct timespec de_ctime; 60 struct vnode *de_vnode; 61 char * de_symlink; 62 }; 63 64 struct devfs_node { 65 struct kern_target *kf_kt; 66 }; 67 68 struct devfs_mount { 69 struct vnode *dm_root; /* Root node */ 70 struct devfs_dir *dm_rootdir; 71 struct devfs_dir *dm_basedir; 72 unsigned dm_generation; 73 struct devfs_dirent *dm_dirent[NDEVINO]; 74 int dm_inode; 75 }; 76 77 78 extern dev_t devfs_inot[NDEVINO]; 79 extern int devfs_nino; 80 extern unsigned devfs_generation; 81 82 #define VFSTODEVFS(mp) ((struct devfs_mount *)((mp)->mnt_data)) 83 84 extern vop_t **devfs_vnodeop_p; 85 extern vop_t **devfs_specop_p; 86 int devfs_populate __P((struct devfs_mount *dm)); 87 struct devfs_dir * devfs_vmkdir __P((void)); 88 struct devfs_dirent * devfs_newdirent __P((char *name, int namelen)); 89 void devfs_purge __P((struct devfs_dir *dd)); 90 void devfs_delete __P((struct devfs_dir *dd, struct devfs_dirent *de)); 91 #endif /* DEVFS_INTERN */ 92 93 typedef void (*devfs_clone_fn) __P((void *arg, char *name, int namelen, dev_t *result)); 94 95 int devfs_stdclone __P((char *name, char **namep, char *stem, int *unit)); 96 EVENTHANDLER_DECLARE(devfs_clone, devfs_clone_fn); 97 #endif /* _KERNEL */ 98